Steam boiler



June 10', 1930. D. H. SHANNON 1,762,246

swam BOILER Filed Aug. 16, 1921'; 2 Sheets-Sheet 1 IN V EN TOR.

m BY Llb M ATTORNEYS.

June 10, 1930; D. H. SHANNON STEAM BOILER Filed Aug. 16, 1925 2 Sheets-Sheet 2' INVENTOR.

m/4 w BY.

A TTORNEYS Patented June 19, 1930 I I I Y STATES magnets sirAni oir or 'nnrnorr, nionrenitnssrenon ro THE 134120001:

' CQXCO'MPANY, or'iBAYoN I NEW JERSEY, A conronerron OF NEWJEBSEY STEAM serene p i Application fiiledAugristlGQ 1923 Serial No. 657,669. .4 My invention relates to stean1 boilers and *thereofQI provide a baflie 29. having lower has particular reference to improvements in and upper shelf portions 30 arrd3l, respecbafflestherefor and in the manner of their" tively.- Ba'fHes 27 and 29-are secured to the arrangement and location. I tubes in amanner to be presently described.

My invention will best be understood Intermediate baflies 32 and 33 serve to cause 55" from the following specification taken with the gasesto make a plurality of passes'over i V the annexed drawings, in which Fig. 1 .is a the tubes 14. The gases leave the, boiler I V sectional view, in elevationyof a halfof a through exit opening.35.' l v r 3 boiler ofa Well-known type containing an' Figs.2 to8illustrate' the manner of conillustrative embodiment of my invention; struction of the bafiles27 andu29l-andthe no Fig. 2 is an'enlarged view of a portion of f means for securing them to the boiler tubes, 1 one of the baflies and adjoii ing baffle shelf, Figs. 2', '3, 5'and 6 show :in'detail thecon- Fig3is an enlarged viewof the lower end -struction- .I- have employed -for baffle :29 portion of the'same baffle; Fig. 4 is asec-y which is placed in. a relatively-cool position tionalview in detail of a portion of another in the setting; n whichi longitudinal" title ;;.65

baffle ,Fig. 5 is a view in section taken along sections 40;. are securedltothetube's 14* by the line 5--5 of Fig-.2;- Fig. 6 is-afront means of strap 'members 41 which pass view 'showing a portion of one of: the baffles around a tube 141 an'd-a're securedat the ends in place; Fig. 7 is' a view corresponding to thereof to the tile sections by means of bolts I ig. 6, of the baflleshown in. Fig. 4, andfl4=2 andnuts 13. a By having thezline of con-170 Fig. 8 -'s a view in section taken along line v tact of successivetile sections- LO contiguous 8- 8 of Fig. 1. f i I --.with the boiler tube, I am able to securetwo- Like reference characters indicate like tile sectionsby means of a single strap 11; U f parts in the different views. 7 1 As shown inxFig. 7,1 employ asomewhat e 25. i In the installation shown in Fig. 1, 10 similar construction "for securing together. &

denotes the mud drum of aboiler of the tile,sections 4:5 ofbaflle 27 whichis placed in Stirling W type, also having steam and a-relatively hot position in the setting where water drums 11 and 12. Abank of tubes the face. of the bafiie onthe'sidefarthest 13 connectsv mud drum 10 to steam and water fromthe supporting tubes is swept by the drum 12 and'a bank li-connects mud drum hotter gases. In this instance it'isadvan V 10 with steam and Water drum 11. A supertageous to provide each tile section with reheater having tubes 20 and headers21fand cesses 16 preferably at the ends thereof 'and 22 is located between banks oftubes13 and ,arrangedso that a recess 46 is formed partly v 14:. A bailie member 21"extends from header in eachof the, adj acent ends oftwo ti=le 'secp as 21 to header 22 in order to direct the-flow ti 45. B l ti g th d f e t 95131119 gases'beneath isalldihefilclers- AS 1 12 and thenuts 13 within these recesses *iuustliatedv h furnacscomPl'lsem Q and thereafter filling: the remainingspace "1031 stokergg" j i '1' therein with sealing inean'sfiuch as fire-clay The tubes 13 are provided 'W1tl1l-l16 cus- Othei. yrefmcbor I -rovide a m Slip v tonmry. f l h i a shelf Portion face for the baffle wliich is suitable for re-" thereby li d Y Pass of the gases Ovel sistin the'gasesf Thebolts#12 and nuts14 3 V shelf 26 and across the tubes 20 of the superd t t b 1 th t heater. In the illustrative embodiment, a a i {mm a. .wg p i fiw.

baffle 27 of;specialconstruction extends froma W q h metal Win-be: t b $309 .315, the drum 11 in front of the first row 14 0f V i s- 1 efl y l t g t e- 9s i the bank of tubes 14 throughout the greater I w thewstmpsw l i hm Contact, t

v portion of'their length and terminates pref- Q Q 1Q I- j bF w W b seen lg e 'erably below the upper superheater header 10111135, we l t e. 1 I1g1 111nal edges. Qi h 21. On the outermost row 14" of the bank sections are closed' and substantially sealed 50 of tubes 1 1 and preferably on the" outside against leaka'ge of gases by-the-fact thatsaiioo I V 10 6 1 93 ed for securing means of angle members which are at-' .tached to the tubes by means of strap memcase. illustrated, by

of the heating surface shielded from the cooling effect of the water protect the fastening means in the recesses 46. gas through battle is materially reduced,

In this arrangement the leakage of and a much tighter baffle is provided. I

2 illustrates the manner I have emtheupp'er end of baffle 2-9. In this construction, angle members 50 secure the supporting members or stringers 51 upon which til- The members 51 are likeboiler casing 54 by means i A shelf member 30 of bathe 29 by wise secured to the of angle members 50.

bers i1.

v -From the foregoing, it will be seen that I have provided a simple and effective form of baffle constructionwhich is adapted to be placed on the under side of a row of inclined water tubes. 1 When so located, an appreciably greater flow area for the gases is afi'erded than would otherwise be the Furthermore, in the type of boiler locating a baiile immediately adjacent the superheater the major portion of the latter is tubes which .would otherwise tend to absorb radiated heat/from the superheater, thereby causing the superheater to be more effective and to give a higher degree of #superheat fora given superheating surface than when the 'superheater tubes are not so shielded from the cooling effect of the water tubes.

Q It willbe understood that the foregoing construction is illustrative merely and that various changes may be made both in the form of the baffles described and their location without departing from the spirit of my invention.

, ,I claim:

1. A l-bafile for a water tube boiler comprising blocks of refractory material, means for securing said blocks to the boiler tubes comprising strap members each adaptedto extend around a boiler tube, means securing said strap members to said blocks, the

arrangement of straps and blocks being such that the sides of saidblocks are contiguous alongthe boiler tubes and a strap is se-i i "cured to contiguous blocks.

2. v n combination, of water tubes and a flat tile bathe extending along and in front of an outermost row of tubes of said bank, and having metallic g straps disposed aroundthetubes and in extended thermal engagement therewith to attach the 'tiles'there'to, the outer surface smooth and the attaching the shelf niemberBI to courses, and attached to a boiler having a bank courses clam 111 means surroundin and having extended thermal engagement with the boiler tubes, and having their ends located in pockets of adjacent tiles, said pockets being filled with hardened plastic material,said plastic material serving to seal the joints between adjacent tiles to reduce gas leakage.

5. A boiler bafiie made up of tiles laid in boiler tubes by means which come between the courses, pockets in the tiles opposite said means so arranged that plastic material introduced into the pockets and afterwards hardened will be held securely in place, said means having portions said plastic material covering the portions of said means so lying-in said pockets and also lying over the joints between adjacent tiles to reduce gas leakage.

6. A water tube steam boiler tubes arranged in rows and a bafile extending across the boiler adjacent to one of said. rows, said bafile comprising a plurality of separate sections with their adjacent edges positioned opposite members embracing said tube and securing adjacent sections thereto.

7. In a boiler, a row of tubes and a bafiie disposed on one side thereof, said baflle comprising a plurality of sections arrangedv with longitudinal edges opposite a tube in said row and adjacent thereto and with transverse edges adjacent each other, means disposed between said transverse edges and engaging the adjacent sectionsand a tube,'

DON I-IARQLD SHANNON.

lying in said pockets and having water:

a tube in said row, andmade up of tiles laid in i 

